The 21-year-old's ability on the ball and pace have made him an eye-catching proposition, with Fernando Santos handing him a senior international debut in October.

And he now looks set to either remain at Sporting for several more years or, should he move, bring in a sizeable fee, with the club revealing his new contract contains a €60 million release clause, €15m more than in his previous deal.

Sporting also confirmed, in conjunction with Sunderland, they have opted to make Coates' loan move permanent - the Uruguayan also signing until July 2022 in a deal which sets his release clause at €45m.